Sheet-glass-making apparatus



Aug. 4, 1925.

R. M. CORL GLASS MAKING APPARATLB SHEET 1922 2 Sheets-Sheet 1 Filed Nov.

Aug. 4, 1925.

R. M. CORL SHEET GLASS MAKLNG APIARATUS 2 Sheets-Sheet 2 INVERTER.

. 5 fawn Mmwm v osir -sossfe'r norm, er -Meshes; onto; Assrenort To 1mmGLASS cos/menu, orv soLEno, onio; s oonronewron or DELAWhB-EsHEn'r-eLAss-M'Amnci AITABATUS.

Application filed- Novemberof' Maumee, in the county of Lucas and Stateof Ohio, have made an Invention Appertaining' to a Sheet-Gless-MakingAppzv ratus; and I do hereby declare the follow 1 'ing toflbe a full,clear, and exact description of the invention, such as will enableothers slzillediin the art to which it uppertains to make and use theseine, reference-being had lo the accon'q'mnying drawings, and to thecharacters *of reference marked thereon,

whichform' a part of this specification.

This invei'ition relates to the Inainifucture of'shc'et glass andparticularly applies to means 1", supporting thesheet, after leaving theforniiuq point, controllin'g'the speed of'mov'ement or the she om suclrpoint, a

' V ping undsevering means in som'ecasesconstitute'bars extending:icr'oss n sheet'tlnouglr out itsxridthand supportcdlut their ends bycha ns with which they move 'at-the desired s'peed of movement of thesheet. These bars have a tendencvto' warhow or snrin outwardly niithrespect to the sheet due to the length of the bars, the application.offtlie clamping pressure thereto its. ends, and the heat to whichtheyhre subjected in use. This results in an ineffective clamping andsevering of the sheet throughout it -swyidth,

and with respect to the severing leaves a portion of t-he sheet,along'the intended line of severing end intermediate the ends thereof,which is not completely severed with re-.

spect to the clamping action. The ineil'ectual or unequal gripping ofthe sheet throughout its width by the grippnigniembers causes an unequalsupporting of the sheet and pern'riis n. sagging; (if/the u'nsu y portedportions. 7

An object of the i.i' x '-cntiou isiio ran-rose these-rearing strainfrom the clumping ha-rs so the clanrpi whars will not he howedor sprungout: by the severing action, tl'ierehy i -.lv

:Adiothe ize the sev iwith 'pnrts in full, fragmentary elevation of thesheet severing transversely sever! ng the she'et into sue-i"ees'sivesections.

- I "-Figffi'i's r'sec-tion en the i In apparatus of this class"the"sheetgrip? Figs. '7 and 8 are ire,

ing u. i

2-, 192%. Serial No, 595,495.

form pressure of the clamping bars against forms,'a preferreden'ibodiment thereoflwith some modifications, are illustrated-in theaccompanying drawings, in w hich-,--

Figure 1. is a fragmentary seeti ofvan apparatus embodying theinvention, Fig. 2 is an enlarged and supporting means with parts broi-zen uwziy. Fig. 3 is an enlarged fragmentary side elevation of theupper portion of said means. Fig. 4r. is u seetion on the;line %l-% inFig. is a firzigrnentz-iry detail of e clumping hurund attached carryingchain. '"ne 6- in Fig; 2.

sectional views'of difierent modifieirv :ons 7 111g members. Fig. 9 isan enliir gec'l seetional fragmentary view of a inodifiedforn'r of the.

'. clam in mea-ns and Fi 10 showsf'u; modii E i lied form" of theclamping and severing IHWHIS.

Txeferring-to the drawings, (a desl gnh-tes a sheet of glass which, inthe p1'esent= 'nstence, .flows downward by gravity from a,' 'source ofmolten glass supply over and' from a fornmtive means 1, and thencepasses do'wnbe tween asupporting and severing means thereforconstituting the present invention. The supporting means includesfapairof el' d'less chains 2 ateach sideo'f the, sheet and guided byrespective sets of sprocket wheels 3, disposed to have a cheiubf eaehpuir opposing a ehainof the other pair outside the respectii 'e edge ofthe sheet, The sprocket wheels 3 are curried by respective upper andshafts l journaled'in suib able supporting frames or standards 5,whichhniay ,heve'uppee and lower sections mounted for relati elongitudinal adjustmeet to ermit the-taking up of slack in the chnins.,The standard sections are yieldingheld in out eQr-dly extendingrelation by a le sion nic-e-iis 6. v The eheinsere guided to l ights nprolonged versh have tnei these er one-l view lel relation to the sheetas shown. The chains of opposing pairs are connected to any suitabledriving means not shown, so that the speed of movement of the chains maybe controlled to regulate the speed of movement of the sheet.

The chains 2 of each 'pair are connected at intervals by crosssheet-clamping bars 7 and these bars are adapted to cooperate withopposing cross-bars of the other pair of chains during the inner flightof movements thereof to clamp the sheet a therebetween. These bars arepreferably of channel form to give them rigidity, and the outer side oftheir cross portions form the sheet gripping surfaces of the bars andare roughened or ser rated as shown, to facilitate the "ripping action.l'lgrclrbar is provided in ts cross portion longitudinally thereof witha slot 8, which is disposed centrally of the side. edges suit the lengthof tile sections into which the sheet is to be separated.

A pair of shafts 9 are'r'nounted in opposed relation, one at each sideof th sheet a, and

preferably near the upper 'ends of the Inner chain flights. Each shaft 9is journaled in a pair of bearing arms 10, one of which projectsdownwardandinward from the adjacent upper shaft 4 and the other from ashaft 11 mounted in the upper sections of the bearing standards 5. Theshafts 9 are in tended to extendentirely across and beyond the edges ofa sheet a,- and a pair of bearing arins'lO is provided therefor at eachend. The shafts 9 are connected by gears 12 tn cause them to rotate inunison. r

The bearing arms 10 carrying the severing whhei shafts 9 are preferablymounted on accent cs 13: on the shafts 4 arid 11 so that an ad, relativeillWiU(l,-1I!(i ()lltwfi l'd adjustment of tire severing wheels to varythe spacing therehetwecn, as it may he desired to either secure acomplete severing of the sheet or merely a schring of the'same tofacilitate a. subsequent lliflflklllg' oil of thesheet along the scoredor weakened line. This adjustment also enables the means or supportingstandards carrying the chains 9 to be adjusted inward or outwardrelative to the severing Wl1(EC-l.- to suit the thickness of the sheetbeing acted on. For instance, if the clamping means has been adjusted toact on a thin sheet and it desired to form a much thicker sheet, thesupporting means for the chains are outwardly adjusted and theseverstmcnt of the eccentrics will effect a.

ing means may then be adjustedinward the extent that the chains wereadjusted 'outward.

Each shaft 9 carries a severing wheel 13 of a length equal at least tothe width of the sheet and having one or more longitudinally extendingradial arms 14 projecting therefrom and terminating at their outer edgesin sheet severing, pinching off or- Scoring ribs 15. In the presentinstance the severing wheel is provided with two arms 14 arrangedinopposed relation. \Vhen a set of clamping bars 7 moves into registerwith a set of opposed severing wheels 13, an arm 14 of each wheel bearsat its outer end against the in: ner side of the respective clamping bar7 at the edges of its slot 8, andt-he ribs 15 of the two opposed armsproject throughthe slots and have severing, biting-01f or scoringcoaction with the sheet. The wheels 13 are sufiiciently massive andrigid in their construction to prevent any possibility of warping orspringing out of shape during use,

thereby insuring a clean uniform severing or scoring of the sheetthroughout its width. The pressure of the wheels against the olamplngbars 7 also serves to hold such bars in clamping relation to the sheetand to maintain the clamping faces of the bars parallel so thatoneportion of the sheet will not be gripped by a set of bars moreclosely than another portion. This prevents any spring ing'out tendencyof the clamping bars intermediate their. endsan'd maintains a; uniformgripping coactionof the bars throughout and severingvwheels 13, arepreferably made hollow for the circulating ofa cooling mediumther'et-hrou h, the interior of the wheel IG'mounted on an end thereofadjacent to a respective chain2, and the teeth of this wheel are sodisposed thata pin or" roller tooth 17 projecting froma side of theadjacent chain 2 will engage a tooth of the ratchet wheel as the pintooth passes 1 the same inits downward flight of movement with the chainand im art a turning movement-of the wheels. n' the present instance thesevering wheels lfifare provided with two severing arms 1 1, the ratchetwheels are provided with SiX fieeth, and the chains are providedadjacent to each clamping bar 7 with three pins 17, ,the later arrangedto engage successive iteeth .on. the cone! ing ratchet wheel 16. andimpart a. half rotation to the wheel as the} chain teeth 1? passdownward by the same; thus moving a severing arm 1 .1. into and oil-t ofsevering engagement with the sheet. Inasmuch as the cutter shafts 9 aregeared together it is necessary to provide only a single ratchet wheel16 ad acent to a cham'Q in order to :100' their lengths with the sheet--The shafts 9 means independent of the clamping bars and operable duringthe period of gripping of the sheet by the bars to sever the sheetbetween the 11 per and lower points of gripping of the sheet by the setof bars.

6. In an apparatus of the class described, means having a set ofclamping bars operable to have opposed clamping coaction with a sheetafter leaving its formative point and while still soft and remaining inengagcment with the sheetfor a predetermined length of its travel, thebars lcavin altcrnately a short space for severing an a long uncontactedspace, and means having rotatable severing arts automatically operableto periodical y engage the sheet in successive severing spaces.

7. In an apparatus of the class described, means having sets of crossbars operable to successively move into opposed clamping relation with asheet while still soft and continuing a distance in engagement with thesheet, and means having rotatable members actuated at predeterminedintervals by movements of the clamping means toengage andconstrict thesheet during the clamping operation and adjacent to the point ofclamping of the sheet. a

8. In an apparatus of the class described, means having sets of crossbars operable to successively move into opposed clamping relation with asheet while still soft and continuing a distance in engagement with thesheet, and means having rotatable severing members operable to engagethe clamping bars of the clamping means and. maintain them in parallelclamping relation to the sheet and to sever the sheet at points inter:-

mediate the upper and lower sheet gripping edges of the clamping parts.

9. In an apparatus of the class described,

means including a set of chains and cr0ss-- clamping bars carried by thechains to have gripping coaction with a sheet of glass passing from aformative point and to remain in contact therewith until the sheet issubstantiaily set, the clamping bars having gripping coaction entirelyacross vertically s 'iaced portions of the sheet, such spaced portionsleaving alternately a short space for severing and a comparatively longspace unmarred by the mechanism and severing means actuated by movementsof the clamping means and having rotatable severing members movable intoopposed severing coaction with the sheet while gripped by the bars andin the severing space.

it). In an apparatus of the class described, a pair of opposed rotatablemembers operable to engage and sever a sheet 0* glass therebetwecn as itpasses away from a formative point, means operable to successive] y gripstrips across the sheet at longitudinally spaced intervals and to remainin gripping contact therewith throughout a predetermined portion of itsmovement, the gripping means gripping the sheet before the severingaction and at each side of the sevcring point adjacent thereto, andmeans actuated by movements of the clamping means to impart periodicalsevering movements to the severing members.

In testimony whereof I have hereunto signed myname to thisspecification.

ROBERT M. CORL.

